1. Populations and Communities
What does an organism get from it’s environment?
An organism gets food, water, shelter, and other things it needs to live, grow, and reproduce from its environment
Organism: a living thing
Habitat: An environment that provides the things a specific organism needs to live, grow, and reproduce

2. Living Things and the Environment
Factors in
a Prairie Habitat
A prairie
dog interacts with many biotic and abiotic factors in the prairie habitat.

3. Biotic Factors: The parts of a habitat that are living, or once living, and interact with an organism Not all of the factors that organisms interact with are living. Abiotic: The nonliving parts of an organism’s habitat - Sunlight - Soil - Temperature - Oxygen -Water

4. Living Things and the Environment
Biotic and Abiotic Factors
Salt is an abiotic factor found in some environments. To see how the amount of salt affects the hatching of brine shrimp eggs, varying amounts of salt were added to four different 500-mL beakers.

5. Living Things and the Environment
Ecological Organization
The smallest level of organization is the organism. The largest is the entire ecosystem.

6. How is an ecosystem organized?
The smallest level of organization is a single organisms, which belongs to a population that includes other members of its species. The population belongs to a community of different species. The community and abiotic factors together form an ecosystem. Ecology: The study of how organisms interact with each other and their environment